Klixon with limit 120C. Protects the pump when it over heats. One Male lead and one female lead. The pumps are good for imtermittent use of 100 seconds at a time. ULKA pumps do not fail if the machine is descaled every two to three months. For exploded diagram and maintenance information, visit http://www.partsguru.com/SolisEspresso.html

Descaling is best done manually every two or three months.Order Best descaler (#DSC-6) and follow authentic descaling process.